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The load and boot up speed has improved considerably over Windows’ predecessors. This is moderately due to the enhanced resource allocations to applications and the system. When compared to Windows 7 desktop CPU, Windows 8 has an even speedier boot time.

2. Innovative & Energetic Desktop

The tiles-based interface, or the Metro UI, will be the first thing you see upon logging in to Windows 8. At first glimpse, the UI seems to go by instinct with touchscreen devices like tablets and smartphones. Certainly, in such devices, you tap on those apps to open them. The gridlayout seems to ease such interactions. Unneeded to say, you can customize your grid by adding and arranging applications.

3. Enhanced Search Function

8 have no search box at the base of the Start menu. Heck, it doesn’t even have the trademark Start menu! That doesn’t signify that there’s no convenient search function available. All you need to do is to type anything, and a search box will appear from the right and give you the results. The search potential is even stronger this time, displaying all the matching apps and files immediately.

4. Windows to Go

Of the entire list here, this is one feature that offers the most handiness to users. Windows to go allows users to make a copy of their OS whole with their settings, wallpapers, files and even apps,into a USB thumb drive. Plugged it into another computer with Windows 8 already installed, and you can boot up the PC and make it look accurately alike the OS you normally use, with all settings intact.

5. Windows Live Syncing

Similar to Windows to Go, the new Windows 8 will supply Windows Live syncing, such that users can login on any Windows 8 PC with ‘Live ID’ and get back their own personalized settings on it. The desktop will look the same every time the user login on a PC with their Windows Live account. Migrating to a new PC is most likely made easier when the user has all the important settings synced.

· The chief disadvantage is lies in the working, the system is reboot several times (especially for 30 min) only for developer and consumer sample not for pro.

· No antivirus for the windows 8(consumer and developer preview) only windows firewall and internet security (but available for win 8 pro).

· Apps works only in the full monitor by occupying the full face of the monitor.

· No side apps can be scamper will we are using the apps.

· And my proposal is to run the windows 8 consumer appetizer in another (dual boot),because it has many problem in it and if the windows 8 release stick to it, until you should be strike in windows 7 or windows xp.

Oh, thanks for all of you. Recently, I'm considering that whether I should install Windows 8 operating system on my laptop, which already installed Windows 7 operating system. Or, I just upgrad Windows 7 to Windows 8 os. Having all your anwers, I know how to do it.